stolen from Mapfiend but I thought it was useful.
Open file UI_charname_servername.ini (eg UI_Myname_erollisi.ini)
Scroll down to [MapViewWnd]
Change default RGB values to any color you fancy
GroupColor.red=0
GroupColor.green=0
GroupColor.blue=0
Save file
I chose green 255
Quix
How to change group X color on the map
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